The Polini Jet Set includes 10 precision-made jets, each measuring 5mm and ranging in size from 60 to 78. Specially crafted by Polini, a trusted name in scooter performance parts, this jet set is designed to optimize your carburetor’s fuel delivery, ensuring your engine runs smoothly and efficiently. This set is perfect for those looking to fine-tune their carburetor and achieve optimal performance, whether for racing or everyday use. Experience enhanced throttle response, improved fuel efficiency, and overall better engine performance with this comprehensive jet set.